Severance Pay Tax Calculator 2026

Estimate how much an employer may withhold for federal income tax, Social Security, Medicare, and an estimated state rate. Compare the estimate across all 50 states.

How Is Severance Pay Taxed?

Severance pay is taxable wage income and is treated as supplemental wages for federal withholding. For a separately identified payment, an eligible employer may use the optional 22% federal flat-rate method or the aggregate method. A mandatory 37% rate applies only to the portion that takes cumulative supplemental wages from that employer above $1 million in the year. Federal withholding is a prepayment, not your final tax liability.

•Federal income tax: optional 22% flat-rate method when the IRS conditions are met; aggregate method otherwise or by employer choice; mandatory 37% on the portion above the cumulative $1 million threshold.
•State income-tax withholding: methods vary by state and payment timing, from 0% in the nine states with no income tax upward. The calculator applies an estimated rate for the state you select; your payroll team can confirm the method that applies.
•Social Security: 6.2% up to the $184,500 2026 wage base, using wages already paid by that employer.
•Medicare: 1.45% with no wage cap, plus 0.9% Additional Medicare withholding on same-employer Medicare wages above $200,000.

The calculator below models the optional federal flat-rate method, not the federal or state aggregate methods, and applies an estimated rate for the state you select. Your actual withholding and final tax can be higher or lower, so treat the result as a starting-point estimate.

This page provides general educational information, not legal, financial, or tax advice. Tax and payroll rules change, and individual circumstances determine final liability. Verify current rules with official sources and consult a qualified tax professional about your situation; consult a licensed employment attorney for questions about an agreement or your legal rights.

Estimate Your Severance Withholding

Estimate federal income-tax, federal payroll-tax, and state income-tax withholding on a separately identified severance payment. This does not model every state payroll deduction, including California SDI, and it is not a calculation of your final tax bill.

Gross Severance Amount

State

California publishes a 6.6% supplemental-wage withholding rate; payroll may use the aggregate method instead. 2026 rate, verified 23 Aug 2026. Source

The amount your employer withholds can be higher or lower than this estimate: your payroll team or state tax agency can confirm the method that applies to your payment.

2026 wages already paid by this employer

Use the year-to-date taxable-wage figures on your latest pay statement. These are not your annual salary.

Social Security wages YTD

Medicare wages YTD

Other supplemental wages YTD

A blank field is treated as $0. That can overstate Social Security withholding or understate federal income-tax or Additional Medicare withholding if this employer has already paid you wages in 2026.

Federal method used: This estimate assumes the severance is identified separately and the employer uses the IRS optional flat-rate method. That method is available when federal income tax was withheld from regular wages in the current or immediately preceding calendar year. An employer using the aggregate method may withhold a different amount.

How Severance Pay Is Taxed in 2026

The IRS lists severance as supplemental wages for withholding. If the payment is identified separately and federal income tax was withheld from regular wages in the current or immediately preceding calendar year, the employer may use the optional 22% flat-rate method or the aggregate method. If cumulative supplemental wages from that employer exceed $1 million, the excess is subject to mandatory 37% withholding.

Wage severance is generally also subject to FICA: 6.2% Social Security up to the $184,500 2026 wage base, plus 1.45% Medicare with no wage cap. Employers withhold another 0.9% Additional Medicare Tax on Medicare wages they pay above $200,000 in the calendar year. State withholding rules vary.

Federal sources: the 2026 IRS Employer's Tax Guide, the Social Security contribution and benefit base, and the IRS Additional Medicare Tax summary.

How the State Estimate Works

The state line in the calculator is an estimate for the state you select, a starting point rather than a payroll-confirmed figure. State withholding methods vary, so the amount your employer withholds can be higher or lower. Your employer or payroll team can confirm the rate or amount that applies, and the current employer guidance from the relevant state tax agency is the authoritative source. The IRS directory of state government websites provides official starting links.

The method can depend on how the payment is made. For example, the 2026 California Employer's Guide requires the regular payroll calculation when supplemental and regular wages are paid together, while a separately paid severance may use either an aggregate calculation or California's 6.6% supplemental rate. That is why the state line is labelled an estimate: the method your employer uses decides the actual amount.

Tax-Planning Questions to Verify

These are variables to verify, not recommendations. Eligibility, plan terms, filing status, income, and the agreement can change the result, and a smaller payroll deduction does not necessarily mean a smaller final tax bill.

Payment date: whether the agreement permits a choice, when income would be recognised, and what changing the date would do to benefits and cash flow.
Workplace-plan eligibility: the 2026 elective- deferral limit for most 401(k), 403(b), and governmental 457 plans is $24,500. The regular age-50 catch-up is $8,000, while the higher catch-up for participants aged 60 to 63 is $11,250. Contributions already made count, and the plan decides whether a payment is eligible compensation.
IRA eligibility: the 2026 contribution limit is $7,500 plus a $1,100 age-50 catch-up. A contribution is not automatically deductible; income, filing status, compensation, and workplace-plan coverage matter.
HSA eligibility: the 2026 limits are $4,400 for self-only coverage and $8,750 for family coverage. Coverage, eligibility by month, age, and contributions already made can change the available amount.
Deductions and benefits: charitable gifts are generally deductible only under the applicable itemisation, qualified-organisation, documentation, and percentage-limit rules. The tax treatment of employer-paid benefits and cash substitutes also depends on their structure.

Official references: the IRS 2026 retirement-plan limits, 2026 HSA limits, and charitable-contribution rules. A qualified tax professional can apply them to an actual return.

Frequently Asked Questions

How is severance pay taxed?

Severance is taxable wage income and is treated as supplemental wages for federal withholding. For a separately identified payment, an employer that meets the IRS conditions may use the optional 22% flat-rate method or may use the aggregate method. The portion that takes cumulative supplemental wages from that employer above $1 million is subject to mandatory 37% withholding. Severance is generally also subject to 6.2% Social Security up to the 2026 wage base of $184,500, 1.45% Medicare, and 0.9% Additional Medicare withholding on same-employer Medicare wages above $200,000. State rules vary.

Is the 22% federal tax rate my actual tax rate on severance?

No. If your employer uses the optional flat-rate method, 22% is federal income-tax withholding on the eligible portion, not your final tax rate. An employer may instead use the aggregate method. Your final liability depends on your full tax return and can be higher or lower than the amount withheld.

How do I find my state withholding rate?

The calculator applies an estimated rate for the state you select as a starting point. State rules differ: some permit a flat supplemental rate, some use an aggregate calculation, and payment timing can change the method. Your employer or payroll team can confirm the rate or amount that applies to your payment, and the relevant state tax agency publishes the current employer guidance.

Can I reduce the tax on my severance package?

There is no universal severance tax-reduction strategy. Payment timing, plan eligibility, deductions, credits, and total annual income can change final liability, while changing an agreement can also affect cash flow and benefits. A qualified tax professional can model the available options using the actual agreement; this calculator estimates withholding only.

Is severance taxed differently than regular wages?

Severance remains taxable wage income, but separately identified severance is handled under the supplemental-wage withholding rules. If the IRS conditions are met, an employer may choose the optional 22% flat-rate method or the aggregate method. The amount withheld is reconciled against your final liability when you file your return.

Do I pay Social Security and Medicare tax on severance?

Generally, yes. The employee Social Security rate is 6.2% up to $184,500 of Social Security wages paid by that employer in 2026. Medicare is 1.45% with no wage cap. An employer also withholds 0.9% Additional Medicare Tax on Medicare wages it pays above $200,000 during the year, regardless of filing status.

Does lump sum vs installments change the tax on severance?

The total tax over time is generally similar; what changes is the withholding method and timing, which tax year the income lands in, and interactions with unemployment benefits in some states. Many people weigh those factors, ideally with a tax professional, before agreeing on a payout form.